Mechanical movement



Oct. 12, 1948. c, PETSKEYES 2,451,303

MECHANICAL MOVEMENT Filed June 9, 1945 2 Sheets-Sheet 1 /i pe/ver BY Patented Oct. 12, 1948 =Charles ,H. rlletskeyes Davenport, :lowa, sassignor .;t,o .Gellin'an Manufacturing. Company, R ck and 1.11,, enumeration Jilinois Application June 9, 1945," Serial No. 5989164 21 Thisinvention relates tocertain new-rand useful improvements in a mechanical movement. More t-specifically, the invention relates :to A eb n m in h h there s a driren sea-r.

n :a i i as e e da an eme t he eb the driven gear W ll-b :a cele atedlwithrrespeetmo the-drivin e nd he d ven ea will be .del l ra d id e ap id rarperiodi lff vlellifqr afmembe m l b the d chani mn-- his s e of thei vention,;a:;princ pa1;ebjectis to accomplish the above stated-:resultshy'a mechanism which will be 1 simple a in construction, ig lylefii t :1$@, ndzfieq Qm fialf zmanue eatur 7 I e .Other objects will appear hereinafter.

The invention consists, i the novel :combination midi-arrangement of pa,rt5 tobe "hereinafter described, and: claimed.

The, invention will bebest'understood byrefen. ence to (the -accompany n drawingsshowinglthe preferred form 19f construction, and j in which:

Figs a v t a secti nal foetal mew 10fthe ni nti ak ubst ntially :on .zline ram-1 f 553- l 'ig. :2 is a detail vviewlztakensubstantiallypn line-2-2of Fig.1;

r-Fig. 3 isa detailiview simi1ar:toFig. .2 butlshowing-,the parts thereof in different position :wit v respect to each other;

1.--:E. g 4:is-;anillustration;in graph form of arelative position ;.between 1 two 'members embodied in he invention;

Fig.5 is ,a perspective view illustrating one applieationof the invention.

The drawings illustrate the preferred form ofsecured-to the/frame II .by means .of bolts I 22 The-bearing-plate I73 and mounting bracket are substantiallyspaced from eachother'in the manner shown in Fig. 1. Journaled in th'ebearing platerandrthe mounting bracket ID are the end portions I4 of a shaft 15. The shaft I5 is secured, in the present instance, to the mounting bracket hy a set screw -16, whereby the shaft I5 .is held against rotation.

Fixed to this shaft IS in any suitable manner and held thereby against rotation, is a sleeve [1. Disposedrbetween this sleeve..;lllz and the bearing plate 1:3 is ,1 a gear l8 hereinafter. referred to :as the driver gear. Disposed between the sleeve I1 and the mounting bracket I0 is a gear l9 hereinafter referred to as the driven gear. Both the ,Clainis. (CL, I' l-W53) driver gear I 8aandithed-rivemgear IQ: arermoimtefl for ro ation uponitheshait 115.. lfl a conn-ected to ther-by a tog le structurem nclud ng ,a'llinlsiil :having one end portion Leone nec edas at 22 to theidri-tereear t8. T'IIEIDDRQ- siteendportion of this dink m :ispivotallrcolinect dzas t- 32110 the other link 10f ;t h: tog l structure 20,-;and this link :24 is;pivotallyinnn nectecl asat 2-5-t0the driven gear: t9.

.Preferab1y,:though mot necessarily, 'formedms anjntegralipart of .':the sleeve slz'hisia camfli. and adapted to engage this cam -26,f;is a roller H cate riedzbyithe linkill.

The gear I8 carries a swivel block dilandrproiected through an openingz3l iformediin 'thiszbloek 3B: is the shank of: a rod-.32 one. end=portlonz3liof whichxispivotally connectedzas at -iflito theilinkm. Theopposite end portion: of "the :rod 32 is threadeii as .at.i3.53,and;mounted: onithis'areelementsfifi. an thisirod 32, between the swivel; block 30 :an'dthe nut elements 36, are iwashers 31. Disposed abetween;thesetwashersifi'l and:embracingatherrodfilv are zexpansi'on springs'z38. The :gears 18 and 5 min the present instance are sprocketugearsradapted tohave operative engagement with sprocket chains;39 and::40.

::In:Fig.:5,":I have=illustrated one:use toxwh'ich myinvention may be adapted. In this particular instance, .-it is desirable that a follower bar- 4 I momentarilyremain idleto permitean-elevatorfl to pass: above :'a. horizontal p1atform 43, from which platform the follower z' kl isdesigned to convey an article onto the elevator 42. As: showngthis 'follow-er24zl is supported by a pair'of' sprocket-chains 4:4 whichare passedoversprocket gears fli. 9n-

'a shaft 46 carrying certain of the sprocket-gears 45, there :is a rsprocket gear=41 whicl-i operatively engagesithe-sprocket chain 239. The main drivegeariis indicated :ati48y and thisdrive= gear 4 8 has operative connection :with tthe sprocket chain-40. The arrangement :is such :that upon rotationof the driver :gear i I 8, rotation to 1 the driven gear i3 iwilli'be imparted through the toggle structure- 20. whensthe rollerefl 9 moves over the lowest run 5030f: the camt-Zfiythe drivengear wand the driverge'ar-ilfi rotateatogether atithe same speedof rota tion, When,?h0wever, :the roller starts: to---elimb the-shigh surface i. of thecam-Kthe driven gear rotatingintthe direction of the arrow shownin Fig. r3) ,the. driven gear I 9 :will be :acce'lerated' as therollerrZS passes'fromithe'low point to thelhig-h point of the cam and the driven:gear-will rde- Qelerateponidleiastherroller passes-from therhigh nointofttheycam to the lo/wipointithereof. At this point. of the. ;operation,1;the follower barwl is in tIjlQiFGSitiOI-IESIIOWII in Fig.' '5,. =and thearrangement' is:.s11ehithatnthis2follower 'bar- 4 l will remaininthis position until the elevator 42 is moved to a. plane of the platform 43, at which time the roller 29 is about to start its movement from the high point 52 of the cam indicated at the low run 50 thereof, during which movement of the roller from this highpoint 52 to the low, area the gears l8 and "I 9 againrotate substantiallydn unison with respect to each other.

In Fig. 4 I have carefully illustrated the operative relationship between the cam and the roller. In this illustration the full line indicates the driver gear l8. The dotted line indicates the driven gear l9. the cam surface indicated at A, indicates the duration through which both gears l8 and I9 will rotate at the same speed of rotation; the run B indicates the climb of the roller from the low surface of the cam to the high surface thereof. During this movement of the roller upon the cam through this run B, the speed of rota tion of the driven gear will be accelerated with reference to the speed of rotation of the driver gean'until the roller reaches what I term the hill '53 of the cam, at which time, as the'roller passes over this hill 53, the driven gear will momentarily idle as the driver gear continues to rotate. As soon as the roller has moved over the hill-.of the cam and starts its return tothe low. surface of thecam, which is through the run C (Fig. '4), the two gears l8 and I9 will again rotate simultaneously and at the'same speed of rotation.

1-. From the foregoingdescription, it is manifest that I provide a mechanical movement in which one .of two rotatable members (one being driven by the other) is permitted for a predetermined period to idle while the other member continues to rotate. This, as is apparent from the foregoing description, is accomplished by amechanism:which is simple. in construction and one which will be highly efiicient in use and economical in manufacture. U 1

7 While I have illustrated and described the preferred form of construction for carrying m in vention'into effect,.this is capable of variation and .modification without departing. from the spirit of the invention. I, therefore, do not wish to be limited tothe precise details of construction set forth, but, desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to protect .by Letters Patent is: 51. In a mechanical'movement, the combination with a stationary shaft, of a driven member freely rotatable on the shaft, a driver member freely rotatable on the shaft, a cam fixed to said shaft means providing a connection between said members and including a cam engage ing member adapted to engage qsaid cam, said cam engaging member and said cam adapted to. cooperate witheach other whereby to advance saiddriven member with respect to said driver member as said cam engaging member passes from the low .point to the high point of said cam, and to provide a period of dwell for'said low point thereof.

2. In a mechanical movement, the combination with .a stationary shaft, of a driven member freely rotatable on the shaft, a driver member freely-rotatable on the shaft, a cam fixed to said shaft toggle means providing. a, connection'be-- The run of the roller over,

tween said members and including a cam engaging member adapted to engage said cam, said 'camengaging member and said cam adapted to cooperate with each other whereby to advance said driven member with respect to said driver member as said cam engaging member passes from the low point to the high point of said cam and to provide a period of dwell for said driven member as said cam engaging member passes from the high point of said cam to the low point thereof.

3. In a mechanical movement, the combination with a stationary shaft, a driven member freely rotatable on the shaft, a driver member freely rotatable on the'shaft, a flexible connection between said members, and means on 'said shaft and adapted to engage said connection whereby to accelerate said driven member with respect to said d'river member and whereby there will be a period of dwell between the driven member and the driver member.

4. In a device of the class described, a bearing structure, a shaft mounted in said bearing structure, means fixedly connecting the shaft to the bearing structure, a pair of spaced gear members freely rotatable on the shaft, a bearing sleeve positioned between said gear members and fixed to said shaft, a cam member on said bearing sleeve, a toggle connecting the said gear members together, a roller carried by said toggle and adapted to operatively engage said cam member for the purposes substantially described.

5. In a mechanical movement, the combination with a stationary shaft, of a driven member freely rotatable on the shaft, a'driver member freely rotatable on the shaft, a cam fixed to said shaft toggle means providing a connection between said members and including a cam engaging member adapted to engage said-"cam, said, cam engaging member and said cam adapted to cooperate with each other whereby to advance said drivenmember with respectto said driver member as said cam engaging member passes from the low point to thehigh point of said cam and to provide aperiod of dwell for said driven member as said cam engaging member passes from the high point of said cam t0 the low point thereof, and spring means adapted to retard the movement of'said toggle means.

- 6. In a device of the class described, a bearing structure, a shaft mountedin said bearing structure, means fixedly connecting the shaft to the bearing structure, a pair of spaced gear members freely rotatable on the shaft, a, bearing sleevepositioned between said gear members and fixed to said shaft, a cam member on said bearing sleeve, a toggle connecting. the-said gearmembers together, aroller carried by saidltoggle and adapted to operatively engage said cam member REFERENCES CITED The following references are of record in th e' file of this patent:

UNITED STATE PATENTS Number Name 7 Date 2,336,361 Lear Dec. 7', 1943 

